Paper bag



m t e e h s. W e 9 An S. 2 i R B O L M AP d 0 W No. 380,263. Patented Mar. 27, 1138s;

witmowo N. PETERS. Photo-Lithographer. Waxhinglon. D. C.

UNITED STATES PATENT OFFICE.

WILLIAM A. LORENZ, or HARTFORD, CONNECTICUT.

PAPER BAG.

SPECIFICATION forming part of Letters Patent No. 380,263, dated March 27, 1888. r Application filed December 5, 1887. Serial 110.257.045. (ModeL) To all whom; it may concern:

Be it known that I, WILLIAM A. LORENZ, of Hartford, Connecticut, have inventeda new and useful Improvement in Paper Bags, of which the following description and claimconstitute the specification, and which is illustrated in the accompanying two sheets of draw- Ings. i

This invention relates to the mouths of paper bags, the sides of which are inwardly tucked when the bag is collapsed, and the mouths of which are so opened out when the bags are manufactured that they may be quickly and easily filled when they are used.

Figures 1, 2, 3, 4, and 5 represent paper bags with inwardly-tucked sides, and three different kinds of heretofore patented bottoms, and five slightly-modified forms of my present Improvement. the bag of Fig. 1 when its mouth is being opened out into the form shown in the latter figure. Fig. 7 is a view of the bag of Fig. 2 at an intermediate stage of the opening out of lts mouth. Fig. 8 is a view of a pile of bags like Fig. 1, with the upper bag of that pile in a position about to be filled with sugar, grain, coffee, or other merchandise through a funnel inserted in the mouth of the bag.

The process of opening out and folding down the mouth of the bag of Fig. 1 is as follows: The bag, being otherwise completed, is placed upon any suitable surface, and the clips A and B are inserted in the tucks in the side of the bag, so as to hold the ends of the two lower thicknesses of the bag down upon that surface, and the presser-plate O is placed crosswise of the bag, parallel to its upper end, and at a distance therefrom corresponding with the depth of the tucks in the side of the bag or somewhat less than that depth, as shown in the drawings, or somewhat greater than that depth, if desired. The'reupon a tripartite implement, like that delineated by the dotted lines in Fig. 6 and indicated by the letter D, is inserted lengthwise into the mouth of the bag, with its two outer prongs immediately over the two clips, respectively, and with its inner and wider prong between the inward folds of the tucks of the bag, and that implement is then pushed backward over the'presser-plate Fig. 6 is a perspective view of O, and carries with it the upper thickness of the bag and the adjacent parts of l the upper thicknesses of the tucks into the position shown in Fig. 1.

' Thegeneric characteristics of the bag of Fig. 1 include the folds E, which folds, when the bag-is pressed flat ina pile, are right-angled triangles, with their right angles pointing toward each other and separated by the same distance that separates the inward folds of the tucks in the sides of the bag, and include, also, the fold F, which fold is now a rectangle extending across the bag, with its outer edge directed toward the bottom of the' bag, and the specific characteristics of the bag of Fig. 1 include the folds G, the right-angled triangular surfaces of which lie under the rearmost halves of the triangular folds E, respectively.

of Fig. 2 is as follows: Clips A and B are inserted in the tucks in the same positions as in the case of the bag of Fig. 1. Then the two The mode of folding the mouth of the bag upper folds of the tucks of the tube are lifted at the points H and I, respectively, and are carried toward each other on the lines of motion which result from their turning, as upon hinges, upon the diagonal'folds J andK, respectively. At the same time the points L and M are restrained from corresponding movement, but are caused to move in semicircular conrses from their former positions at the upper corners of the bag through their positions shown in Fig. 7 to those shown in Fig. 2. Thus the two inwardly-projecting right-angled-triangular folds N and O and the otherwise similar truncated right-angled triangular folds P and Q are first raised to the form shown in Fig. 7, and are then continuously flattened down into the form shown in Fig. 2. This operation results, also, in producing the right-angled triangular folds or faces E and the crosswise fold F, which folds, though not precisely identical" in form with those correspondingly lettered in the case of the bag of Fig. 1, are identical withthem in function and mode of operation.

The bag of Fig. 2 differs from the bag of Fig. 1 in that the points H and I are carried toward each other instead of being left at the edges of the blank when the mouth of the bag is opened out, and in that the creases which unite the folds N and P and O and Q, respectively. run lengthwise of the bag instead of crosswise thereof; but these diflerences have no material bearing upon the function or mode of operation of the folds E or the fold F.

The mouth of the bag of Fig. 3 is identical with that of the bag of Fig. 1, except that its fold F is provided with a projection, R, made from paper cut away from another paper bag to form a recess in one thickness of the bottom thereof, substantially as shown and described in the Honiss patent, No. 353,307, granted November 30, 1886.

The bag of Fig. 4, except as to its mouth, is identical with that of the Orowell patent, No. 123,811, granted February 20, 1872, and its mouth is folded in the same way as the mouth of the bagof' Fig. 1. That portion ofits lower thickness which is above the upper edge of the fold F is also shorter than the corresponding part of the bag of Fig. 1.

The bag of Fig. 5 is also substantially identical with the Crowell bag except as to its mouth, and its mouth is substantially identical with that of the bag of Fig. 3,except that the folds E are obtuse-angled triangles instead of right 7 angled triangles, and except that the other folds of the month are modified to correspond with that difierence, as clearly shown in Fig. 5. The mode of folding the mouth of the bag of thelast-mentioned figure needs not to be particularly described, because it consists in such a modified mode of the method of folding the bags of Figs..1, 3, and 4 as will be apparent to those persons skilled in the art who attentively inspect the form of the folds of the mouth of the bag of Fi 5.

The mode of opening the mouth of the bag of Fig. 1, to fill it with merchandise, is graphically shown in Fig. 8, and either of the other bags may be opened and filled in the same way.

The merit of my present improvement resides in the fact that a paper bag provided with the generic form of mouth herein described and illustrated can be opened and the bag filled much more easily and quickly than can any paper bag provided with any heretofore known form of mouth. The time thus saved and the difficulty thus averted are comparatively small in opening and using a single paper bag; but those elements of saving when applied to a large number of paper bags amount to.a matter ofconsiderable importance.

The bags of Figs. 1, 2, 3, 4, and 5 are delineated as examples of bags to which my present improvement may be applied, and as examples of the various forms which that improvement may assume; but still other forms of mouths may embody the generic characteristics of my present invention.

I claim as my invention- A paper bag the sides of which are inwardly tucked and the mouth of which is provided with the inwardly-pointing triangular folds E and the downwardly directed cross-fold F, all substantially as described.

WVILLIAM A. LORENZ.

\Vitnesses:

ALBERT H. WALKER, HENRY L. RIOKARD. 

